
Performance isn't great but its playable whilst keeping the noise down. You can get much higher FPS easily if you are ok with fan noise
FPS Capped at 45, TDP Limited to 10 for the sole purpose of keeping the noise down
Game sometimes booted with a very stretched out image. Only fix was to connect it to a dock and unplug it. Thats the only thing that solved it.
Some games feel fine at lower FPS, some feel awful. This game is the former. FSR 2 On - Balanced V-Sync Off Max framerate 60 Ambiet occlusion off Shadows off (big performance hit) Post processing on Resolution scale 100% (looks hella blurry otherwise) AA - High Post processing High (Both necessary to keep it from looking blurry and muddy) FX - Low The rest all set to medium.
Runs around 40/45 fps with drops to lower 30's
Im usually very critical of these 'perfectly playable' at low fps' claims but on this rare occasion i agree.
Ran around 55/60 fps on mid settings at 'full blast' but got very hot and loud. LCD steamdeck btw.

Changing anything within settings breaks controller support
Cannot change anything in settings. Resolution breaks trying to apply changes and controller input breaks

This is after June 2024 Echoes update. Plays well, fps drops to 30ish fps outside but fps improves a lot in dungeons. Settings are a mixture of med/high. The must have video settings imo are AA high, FSR on, resolution 76-80, shadows on med (whatever makes them not blocky). Enjoyabe experience.

Button prompts will sometimes switch between keyboard and controller
Cutscenes will not load. Whenever I enter one, there will just be a black screen. You can still skip them by holding the B button but they will not play even after waiting a good 5 minutes

Settings in the video here https://youtu.be/s5OUEyQWEKY
Using standard proton the initial cut scenes don't play hence switching to GE Proton
Game works great on the Steam deck with some tinkering for the best settings all round which you can follow in this video to see how it performs and the settings used https://youtu.be/s5OUEyQWEKY. Be aware they are having massive load issues and login times are excessive right now

Medium settings and capped at 40fps
Game chat and most window text was small. Option for extra large helped a bit.